I'm sure I was once told by a dentist that came into my primary school that you shouldn't wash your mouth out after you've brushed your teeth because then the toothpaste doesn't have the full effect. I've just read on Yahoo! Answers that leaving toothpaste in your mouth makes them yellow? Is this true? Also, on a different note, how much does it cost (in the UK) to have your teeth whitened by a dentist? Is it worth it? Thanks!
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As dentists we recommend that you spend at least 2 minutes brushing all surfaces of the tooth and then spit out the remaining toothpaste but not to rinse afterwards, thus giving the fluoride time to be effective. It is not advisable to swallow toothpaste because fluoride can be toxic in high levels. ive never heard of toothpaste making peoples teeth yellow though? sometimes people suffer from dental fluorosis which can sometimes appear yellow http://www.purewatergazette.net/images/f… dental fluorosis occurs because of the excessive intake of fluoride either through fluoride added to the water supply or through other sources. The damage in tooth development occurs between the ages of 6 months to 5 years, from the overexposure to fluoride. Teeth are generally composed of hydroxyapatite and carbonated hydroxyapatite; when fluoride is present, fluorapatite is created. Excessive fluoride can cause yellowing of teeth, white spots, and pitting or mottling of enamel. Consequently, the teeth become unsightly. Fluorosis cannot occur once the tooth has erupted into the oral cavity. In the uk tooth whitening can be done privately for about £250+ Nice results can be achieved through this procedure.
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